Eddy,
Thank you so much for the pictures as well as the car/cars they are used on. I will certainly have a go at the car parts shops and see what turns out. Yes, I agree, some more miles will not do any harm. I intend to go on a rally around Torino Italy soon, this should put some 500 odd miles more on the bike. I have changed the oil now as I was not sure what oil was in the machine, I have used Silkoline 20:50 specifically produced for old engines, so this should be a mineral oil. Should be good to continue running in the engine. Actually, Eddy, my breathing problem is only noticeable as when the bike idles, oil is thrown out of the front breather, nothing else. I am not sure what happens when the engine is revving and on the move.
Cheers Tony